The some of the manufacturing process of butane are:
Natural gas processing:
The first step in butane production involves extracting natural gas, which contains various hydrocarbons, from underground reserves. Natural gas often contains a mixture of methane, ethane, propane, butane and other hydrocarbons.
Fractional distillation:
Natural gas undergoes fractional distillation in a processing facility. Fractional distillation separates different hydrocarbons based on their boiling points. When the gas is cooled and condensed, the different components condense at specific temperatures, allowing separation.
Separation and fractionation:
The condensed mixture passes through a fractionation column to separate different hydrocarbons according to their boiling points. This process produces separate fractions of methane, ethane, propane and butane